Eq, from Site A, just dial 2xx to call Site B user.Ģ) Should not involve major changes on VOICE setup, perhaps stick with current PBX system and Analog Phoneģ) Incoming call to Site A, must be able to transfer to Site B over IP networkĬurrently this 3 site is connected via IPSec VPN, with below device. ![]() Now my boss wanted to cut this cost, with below requirement.ġ) Call between branches should be made over IP network, just by dialing extension number. Call between this 3 sites, also made over PSTN line, which involve huge cost. Outbound & inbound call made via this PSTN line. We have 3 sites, all running on thier own Panasonic PBX systemĮvery site, have 3 - 4 PSTN line which connected to the PBX. I have a task to do with VOIP, but generally have no idea on how to accomplish it.
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